Silence doc warnings
Silence doc warnings

Apparently this magic directive silences most of the warnings
encountered when building docs. See
http://stackoverflow.com/questions/12206334/sphinx-autosummary-toctree-contains-reference-to-nonexisting-document-warnings

Change-Id: I228ac191972b15f64d73f0934a1ccbb5453a04cb
Reviewed-on: http://review.couchbase.org/51427
Tested-by: Mark Nunberg <dab05a0fe859c5cb93882b2a75a0d613501b07be@couchbase.com>
Reviewed-by: Volker Mische <fb414f8ac0dbbf87663550ae4ef5fc95b1041941@gmail.com>

mnunberg/couchbase-python-client,couchbase/couchbase-python-client,couchbase/couchbase-python-client,mnunberg/couchbase-python-client